摘要:The concentrations of Zn, Cu, Pb, and Cd were measured in Phragmites australis, Typha angustifolia, and sediment from 11 sites in Karasu Stream, Kayseri, Turkey. Both plants were root accumulators of Zn, Cu, and Cd, having higher concentrations of these elements in their roots than were present in the surrounding sediment. Pb was also accumulated but not against a concentration gradient.